NSM

When I down load and try to install on my third computer (running XP) I get the following message:

 

 Installation could not continue due to the following:

 NSM will not function properly with the version of Norton or Symantec products that is currently installed on your computer.

 To use NSM you need to upgrade to the newest versions.

 

I have NO Norton or Symantec running on the computer

I have checked add and remove programs  no Norton/Symantec

I have run autodetectpkg.exe  no Norton/Symantec

I have checked services.msc. no Norton/Symantec